下碳程序段的输出结果是( )。 class Test{public static void main(Srting args[]){ MyThread t=new MyThread(); t.displayOutput("t has been created"); t.start();} }class MyThread extends Thread{ public void displayOutput(String s){ SYStem.out.println(s);}public void run() { displayOutput("t is running."); } }

A．t has been create

B．t has been createt is runnin

C．t is runnin

D．编译出错